1. IMPORTANT: Measure your size before purchasing. Please follow these steps: ① Keep your legs straight and do not bend your knees; ② Locate the center of your knee; ③ Measure the thigh circumference 4 inches (10 cm) above the knee center; ④ Refer to the size chart for the appropriate size. 2. IDEAL KNEE PROTECTION: Designed ergonomically and ultra-lightweight, this knee brace offers excellent freedom of movement. Perfect for outdoor sports activities. 3. FUNCTIONALITY: Protects against knee injuries during workouts and prevents them. Provides warmth, helps prevent and reduce muscle and joint stiffness. Shock-absorbing, it enhances blood circulation effectively. 4. HIGHLY ELASTIC MATERIAL: The knee brace can stretch an additional 2.5 inches in circumference and length, accommodating various knee sizes. When worn, it feels comfortably cool, making it ideal for prolonged use. USE SCENARIOS: - Ideal for basketball players who need reliable knee support during games and practices. - Perfect for runners looking to prevent injuries while maintaining optimal performance. - Great for outdoor enthusiasts engaging in hiking or climbing, providing essential knee protection on rugged trails.